Lockheed pv 2 harpoon for sale11/28/2023 R was used for Rotorcraft, which was changed to H for Helicopter after 1947. RB was not used for Reconnaissance until after 1947. Before the first of these flew, the design was redesignated again as the B-37, because it used different engines. The O-56 was redesignated the RB-34B (RB- for 'reconnaissance bomber'). Army Air Forces dropped the O- category used to designate 'observation' (reconnaissance) planes. The main differences between the Ventura and the O-56 were in the engines: rather than the 2,000 hp (1,491 kW) Pratt & Whitney R-2800 radials of the Ventura, the O-56 used 1,700 hp (1,270 kW) Wright R-2600-13 radials.īefore completion of the first O-56, the U.S. This plane was originally planned to be built under the designation O-56. Among the orders were for 550 armed reconnaissance versions of the Ventura. In 1941 August, large orders for Venturas were placed with Lend-Lease Act money. Army Air Forces placed its own order for 200 Ventura Mark IIA, which were put into service as the B-34 Lexington. The RAF placed a further order for 487 Ventura Mark IIs, but many of these were diverted to United States Army Air Forces service. The Venturas were gradually transferred to patrol duties with Coastal Command, 30 went to the RCAF and some to the SAAF. They were replaced in this role by the de Havilland Mosquito. They proved unsuited to this task, because (like many other bombers used by the RAF), they were too vulnerable without long-range fighter escorts. Venturas were initially used for daylight raids on occupied Europe. They were delivered from mid-1942 onwards. The RAF ordered 188 Venturas in February 1940. The primary difference was not in layout rather, the Ventura was larger and heavier than the Hudson. The Ventura was very similar to its predecessor, the Lockheed Hudson. It was developed from the Lockheed Model 18 Lodestar transport, as a replacement for the Lockheed Hudson bombers then in service with the Royal Air Force. The Lockheed Ventura was a bomber and patrol aircraft of World War II, used by United States and British Commonwealth forces in several guises. Developed from: Lockheed Model 18 Lodestar
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